package com.cch.examSystem.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.fastjson.JSON;
import com.cch.examSystem.entity.CategoryRelation;

public class CategoryDate extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public CategoryDate() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		this.doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setContentType("text/html");
		response.setCharacterEncoding("utf-8");
		String profession=request.getParameter("profession");
		String subject=request.getParameter("subject");
		if(profession==null&&subject==null) return;
		PrintWriter out = response.getWriter();
		List<CategoryRelation> list=new ArrayList();
		list.add(new CategoryRelation(1,"IT",0,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(2,"数学",0,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(3,"C",1,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(4,"python",1,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(5,"java",1,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(6,"scala",1,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(7,"高数",2,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(8,"数学与应用数学",2,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(9,"信息与计算科学",2,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(10,"反射",5,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(11,"io",5,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(12,"单例",5,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(13,"javaweb",5,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(14,"c知识点1",3,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(15,"c知识点2",3,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(16,"c知识点3",3,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(17,"c知识点4",3,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(18,"python知识点4",4,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(19,"python知识点4",4,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(20,"scala知识点4",6,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(21,"高数知识点4",7,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(22,"知识点4",9,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(23,"数学与应用数学",8,"2017-01-01 05:05:05",1));
		list.add(new CategoryRelation(24,"信息与计算科学",9,"2017-01-01 05:05:05",1));
		Map map=new HashMap<String,String>();
		if(profession==null){
			subject=new String(subject.getBytes("iso8859-1"),"utf-8");
			for(CategoryRelation ca:list){
				if(String.valueOf(ca.getSuperId()).equals(subject)){
					map.put(String.valueOf(ca.getId()), ca.getName());
				}
				
			}
			String a=JSON.toJSONString(map);
			out.write(a);
		}else{
			profession=new String(profession.getBytes("iso8859-1"),"utf-8");
			for(CategoryRelation ca:list){
				if(String.valueOf(ca.getSuperId()).equals(profession)){
					map.put(String.valueOf(ca.getId()), ca.getName());
				}
				
			}
			String a=JSON.toJSONString(map);
			out.write(a);
		}
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
